Adrian Heathcote and I agree that a stopped clock does not show—as the adage has it—the right time twice a day, but he thinks, as I do not, that it does show what time it stopped. To think that it does is to treat the position of its hands as evidence of its stopping at the time it did. Add to the justified-true-belief analysis of knowledge the requirement that the evidence on the basis of which the believer is justified be (...) evidence of what is believed in this sense, and you have the long-sought fourth condition to block Gettier cases. I argue that requiring that one’s evidence be evidence in this sense is incompatible with the fallibilism on which Gettier cases are predicated. (shrink)

In “The Backward Clock, Truth-Tracking, and Safety”, Neil Sinhababu and I gave Backward Clock, a counterexample to Robert Nozick’s truth-tracking analysis of knowledge. In “Knowledge as Fact-Tracking True Belief”, Fred Adams, John Barker and Murray Clarke propose that a true belief constitutes knowledge if and only if it is based on reasons that are sensitive to the fact that makes it true, that is, reasons that wouldn’t obtain if the belief weren’t true. They argue that their analysis evades Backward Clock. (...) Here I show that it doesn’t. Backward Clock likewise shows their analysis to be too weak. The broader lesson seems to be that Backward Clock tells us the time is up for purely modal analyses of knowledge. (shrink)

Beginning with Zagzebski (The Philosophical Quarterly 44:65–73, 1994), some philosophers have argued that there can be no solution to the Gettier counterexamples within the framework of a fallibilist theory of knowledge. If true, this would be devastating, since it is believed on good grounds that infallibilism leads to scepticism. But I argue here that these purported proofs are mistaken and that the truthmaker solution to the Gettier problems is both cogent and fallibilist in nature. To show this I develop the (...) notion of evidence of a state of affairs, a crucial concept in the truthmaker theory. I also argue that a common principle of the transmission of evidence through entailment is false, and the cause of much of the trouble. (shrink)